Grinding-machine for cutlery.



2 Sheets-Sheet I INVENTORQY mmmmww i 7 I BYj I Patented Nov. 28, I899.

T. J. TELLEFSEN. GRINDING MACHINE FOR CUTLEBY.

(Application filed Oct. 20, 1898.}

ATTORNEYS.

In: "ohms PETERS co.. Pnoroumo WASHINGTON. u. c

Patnted Nov. 28, I899.

T. J.-TELLEFSEN.

GRINDING MACHINE FUR CUTLEBY.

(Application filed Oct. 20, 1898.)

2 Sheets-Sheet 2.

(No Model.)

WITNESSES: IINVENTOR I l ivwamofimwull7wmf-sz@ MM.W

ATTORNEYS.

"m: uonms PEIERS 110., Pnoraunia. WASHINGTON. n. c..

llnrrn THEODORE J. TELLEFSEN, OF NEl/VARK, NEW JERSEY, ASSIGNOR TOALFRED F. BANNISTER, OF SAME PLACE.

GRlNDlNG-MACH|NE FOR CUTLERY.

SPECIFICATION forming part of Letters Patent No. 638,205, dated November28, 1899. Application filed October 20, 1898. Serial No. 694,073. (Nomodel.)

To all whom it may concern.-

Be it known that I, THEODORE J. TELLEF- SEN, a citizen of the UnitedStates, residing at Newark, in the county of Essex and State of NewJersey, have invented certain new and useful Improvements inGrinding-Machines for Cutlery and other Articles; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being bad to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification.

This invention relates to certain improvements in that class ofgrinding-machines for cutlery and similar articles represented by themachine illustrated in the prior patent, No. 543,076, issued July 23,1895.

The objects of the present improvements are to simplify the constructionand render the machine more convenient for the attendant.

The invention consists in the improved machines for grinding cutlery andsimilar arti-' cles and in the arrangements and combinations of parts ofthe same, all substantially as will be hereinafter set forth, andfinally embraced in the clauses of the claim.

Referring to the accompanying drawings, in which like letters ofreference indicate corresponding parts in each of the views, Figure 1 isa front elevation of a portion of a grinding-machine having myimprovements. Fig. 2 is a side or end view of the same. Fig. 3 is adetail showing a certain worm-wheel having clutch devices attachedadapted to he automatically operated to effect a break in the train orconnection of certain power-transmit ting devices; and Fig. 4 is asection of the same, taken on line 00. Fig. 5 is a detail of acertaintrip device in connection with a gearwheel (1 and cooperatingparts, and Fig. 6 is a section of the same on line y..

In said drawings, a indicates the frame of the machine, on which is anoscillating workholder 1), adapted to present the knife or artiole to beground to the grinding-wheel (not shown) in the manner fully describedin the Patent No. 543,076 above referred to. Said work-holder b is givenits slow'oscillating movement by a connecting-rod c and a wheel d, thesaid connecting-rod 0 being connected eccentrically to the wheel 61 bymeans of a crank-pin (Z or in any suitable manner.

Power is transmitted to the gear-wheel cl from the pulley e and shaft fby means of a worm g, which last effects a slow motion of thegear-wheeld and the parts 0 b in train therewith. Said worm is loose torotate on the shaft except when clutched. At one end of the worm g Ihave formed clutch-fingers 9, adapted to be engaged by a sliding clutchmember h upon the shaft f, which shaft is provided with a feather '6 toprevent independent turning of said clutch member on 'said shaft. Saidsliding clutch member is held in clutching relation to the worm by acatch j on the frame, which catch engages a cooperating catch 7' Fig. 3,on or in connection with the clutch member h. To effect a sliding of theclutch member h to and from engagement with the worm,.I have preferablyformed a peripheral groove around said clutch member and in the samehave arranged a collar 7c, which at one side is provided with a hub orbox is and at the opposite side is furnished with the codperating catchjabove referred to. The clutch memher It is loose to turn freely in saidcollar 70. Said collar at the hub or box is fixed to a shaft or rod l,arranged in bearings m m of the frame a, said rod sliding longitudinallyin said bearings to efiect the desired movements of the clutch member71, connected therewith. Said shaft Z is in turn operated by ahand-lever n and a spring 0, the former being fulcrumed, as at 19, uponthe frame a, and linked or coupled, as at n, to the shaft 0 or rod Z,whereby the operator or attendant maythrowtheshaftZlongitudinallyinitsbearings and the clutch member it intoclutched relation to the clutch-fingers g of the worm. The spring 0 isdisposed at the opposite end 5 of the rod or shaft Z from the hand-leverbetween a stop-bearing 0' and one of the bearings 'm and normally tendsto throw the clutch members out of clutched relation when the slidingclutch member is released from the catch.

The clutch-catchj is of a lever-like construction and fulcrumed atj uponthe frame at a point contiguous to the clutch members. It is providedwith a catch-fingerj and a trip fingerj and is normally held by a spring0 in position to cause the trip-finger to engage the cooperating catch7' of the clutch memher when forced into clutched relation by the leverand hold said clutch member in such relation. The trip arm or fingerj ofthe lever-like catchj extends into the path of a trip mechanism arrangedupon the wheel (1 and is engaged by said trip mechanism and thrownthereby out of catching relation to permit the spring 0 to actautomatically to release the clutch members.

The trip mechanism is arranged at one side of the wheel 61, near theperiphery thereof, and comprises, preferably, a brackets, having anirregular rib s projecting out from the side of the wheel, which rib isperforated and threaded to receive a limiting-screw 5 Near its other endsaid rib is curved to form a socket s for a pivotal trip-pawl 5 saidtrippawl being centered on a pivot or pin 8 and bearing at its inner endon the curved walls of said socket. The movement of said trippawl islimited in said socket in one direction by the limiting-screw and in theopposite direction by the extension 3 of the rib. Said pawl projects atthe end opposite that lying in the socket toward the periphery of thewheel d and impinges on the fingerj so as to throw the catch j out ofcatching relation to the clutch-catchj. A spring 6 holds the trip-pawlnormally against the limiting extension of the rib and in position totrip the catch With an elastic pressure, all as more fully described andclaimed in a cotemporaneous case filed October 19, 1898, Serial No.694,049.

Having thus described the invention, what I claim as new is- 1. Thecombination in a grinding-machine for cutlery, of the frame a,oscillating Workholder Z), connecting-rod c, and gear-wheel cl,eccentric crank-pin, a pulley e, and shaft f, carrying a worm g, looseon said shaft, said worm at one end having clutch-fingers g, a slidingclutch member 7t, also arranged upon said shaft, a feather i, to preventindependent rotation of the said clutch member, a catch j, on the frame,a cooperating catch 7' in operative connection with the clutchmember,the latter being held thereby into clutched relation to the worm,means for automatically disengaging the catches and throwing theclutch'member out of operative contact and means for throwing saidmembers into engagement, substantially as set forth.

2. The combination,inagrinding-machine, of the frame a, oscillatingwork-holder Z), connecting-rod o, and gear-wheel d, an eccentricconnectionof said gear-wheel and rod, a pulley e, and shaft f, carryinga worm g, loose on said shaft, said worm providing at one end clutchingmeans, a sliding clutch member also arranged on said shaft and adaptedto clutch with the worm, a catch holding said sliding clutch in slidingengagement, means arranged on said gear-Wheel to release said catch fromthe clutch, and means for throwing the sliding clutch member intoclutching relation, substantially as set forth.

3. The combination, in a grinding-machine, of the frame a, oscillatingwork-holder, a conmeeting-rod for oscillating said holder, a gearwheeleccentrically connected to said rod, said gear-wheel having theeccentric connections and meshing with a worm-wheel, said Wormwheelbeing arranged on a shaft contiguous to said gear-wheel, and having aclutch member, said shaft, a second clutch member adapted to engage thefirst and give rotary motion thereto, means for rotating said secondclutch member and causing an operative engagement thereof with thefirst, and a spring for automatically disengaging the clutch members,substantially as set forth.

4. The combination in a grinding-machine, of a frame a, an oscillatingwork-holder, a connecting-rod for oscillating said holder, a gearwheeleccentrically connected to said connecting-rod, a worm-Wheel having aclutch member, a shaft carrying said Worm-Wheel, powerwheel 6, and asliding clutch member, said sliding clutch member having a peripheralgroove to receive a catch-collar 71;, a shaft Z, for moving said collarlengthwise of the shaft first referred to, means for moving said shaftl, lengthwise, a catch engaging the catch of the collarand holding theclutch members in engagement and a trip device in connection with thegear-wheel for releasing the catches,

substantially as set forth.

5. The combination in a grin ding-machine, with the gear-Wheel, (1,thereof, of a shaft f, for transmitting power to the operative parts, aworm-Wheel on said shaft and meshing with said gear-wheel and having aclutch at one end, a sliding catch and clutch and means for sliding andholding the clutch into clutching engagement, trip means for releasingthe catches and a spring for disengaging the clutch membersautomatically when the catches are released,substantially as set forth.

6. In a grinding-machine, the combination with the gear-wheel d, havinga trip device,

IIO

of a shaft f, Worm-wheel d, clutch members g, 7b, a catch in connectionwith the clutch member h, a cooperating catch adapted to be engaged bythe trip device, a spring 0, and means for clutching the clutch members,substantially as set forth.

7. In a grinding-machine, the combination with the gear-Wheel d, havinga trip device near its periphery, of a shaft f, Worm-Wheel g, clutchmembers and power wheel or pulley arranged on said shaft, a catch inconnection with the loose clutch member, a catch to en gage the one onthe loose clutch member, and

In testimony that I claim the foregoing I have hereunto set my hand this8th day of 10 September, 1898.

THEODORE J. TELLEFSEYN.

Witnesses:

CHARLES H. PELL, PETER S. STERNSTRUP.

